Traveling crane



.A. s. STOKES TRAVELING CRANE April 15, 1930.

Filed Sept. 26, 1929 J/L/ f ent invention has for its object to: obviate joint associatedwith the vertical pin about 1 /which thebogiecan'swivel. Alternatively, the girder may terminate in a' in projecting Pa e A r, 15,1930. 7

.NITiED- STATES ANTONY 7 score. srroKns,

orv IPSWICH, lvenAnnv j" TRAvELINe oRAivE Applicatioil filed September 26, 1929, Serial No.

This invention relates to traveling cranes of the kind in which thecrane truck, when traveling, is relieved of partjof the weight of the crane byvniea ns of one ormoreauxiliary or relieving bogies placed at the front and rear of the crane truck or at one end only and each detachably connected thereto by a relieving girder; jacks or the like heing'provided'inkorder to enable the desired 10 proportion'of theweight of the crane'tobe' 'transferred' to thebogieor bog1es.

f In cranes of this "type as hitherto built;

veach relieving girder has been so connected to the'bogie that, whilst the. latter was capable of swi-velling slightly about a vertical axis it' could not move about a horizontal axis. Consequently, when tlie'bogie' entered V portion" of the track in, which there was a difference in" the levels of the rails, for example when entering a curve, one side of the bogie 'was'more heavily loaded than the other, so that there was a tendency to derail the bogie; Moreover, should the crane, on reaching the place at which it was required for use, stop at a point where the rail levels were different, the heavierfloadon one vside of the bogie'threw a side load on the pin connecting the relieving girder to th'e crane Y truckso that the withdrawal and subsequent insertion of this pin was diflicult. The presthese disadvantages; o, o According tothe present invention. in a crane of'the kind described theconnection between the relieving girder and thebogie is such that in addition to a swivelling movement about a vertical axis the. bogie is per mitted to oscillate about an axis or axes in the horizontal plane so as to allow the bogie to roll, that is "to say rock transversely, or pitch, that is to say rock inthe fore and aft direction, or to perform both these movements simultaneously. I To this end the relieving girder may be connected to the bogie by me'ans of a ball longitudinally in: the fore an aft direction with reference to the accompanying drawshown in Figure2. 1

traveling-,in 'train and. at. other times bogies "i .v and passingafreely through a, yoke which in sas'aaaenam Great Britain October, 4, 1928.

turnis mounted onthe bogie frame so as to I allow the latter to'rock about a transverse axis, the whole being combined with averv tical pin to permit the bo'gie to swivel,means being provided also for raising and lower- 5 ing the girder relatively to the bogie in order to adjust the proportion of the weight of the crane taken by the bogie.) I v The relieving girder is conveniently connected' to the'cr'ane truck by means of a removable pin passing through. lugs on the girder and on the crane truck and, in order to facilitate the insertion of the pin, guides may be provided or thelugs so formed that, operating in conjunction with the relative -movement permitted to the bogie and girder 'by-rea'sonof the connection between them,

the holes for the coupling pin'can be brought readily into register; Similarly the guides or lug'formations tend to :prevent binding- 70 of the lugs on the pinand allow the latter to be withdrawn easily. 7 v Oneform ofcrane according to the-invention will now be described by wayof example ings, inwhich [Figure 1 shows the cranei somewhat diagrammaticallyin side elevation, o

'5 Figure 2 is, aside elevation partly in sec- 1 'tion on an enlarged scale of one ofthe auxiliary bogies, and c v I Figure 3' is a-plan of'the-auxiliary bogie "Referringto- Figure 1, the crane proper, including its controlling mechanism, as it shown in brokenlines'and is mounted on-a, rotatable table-A of a main truck A toeach end of whichare connected, for purposes of Referring, now to Figures 2 and '3, each I ibogie comprises a frame'C which supports a relieving-girder D by means-of'which the tru'ck A is attached to, the bog'ie B' andpart 95 of theweightof-the truck is transferred to 1 the bo 'ie in a manner hereinafter to be described The girder D is deeper at one end 11 than-at the other end 1) so'that' itlis (substantially triangularin elevation ;(Figure 290 s5 forms no part of the present invention is V f V 2) and the end D is permanently secured to the frame C by means of a ball connection. This connection comprises two cup-shaped members E, E mounted opposite one another on the end 1) of the girder l) and a ball mem ber F adapted to turn within the cup-shaped members-E, E which thusserye as a hearing for it. The ballmemhenh isebored to receive a vertical spindle G the upper end of which passes through a bearing H on the top of the bogie frame (3 and is screwthreaded at G to receive a nut J the lower end of the spindle G being held in a guide bearing H carried atthebottom of the frame C. Eorming part of or fixed to the spindle G and immediately; below the all member F is aslioulderCi on which the ball member rests so that the spindlesupports the. end Di Ofthe relievinggirder D. On the nut J is. a worm wheel J which cooperates. with a worm. J heyedon otherwise .fi redtoa shaft K mounted.i1 ;b earings L and L on top of the frame C, the shaft K having squared ends K K for. ahandle by means fofwhich the shaft K can; he turned to rotate through the W rm ge r. J -J =the nut, J; and thus raise or lower the-e d Diof; the girder-VD relative to the bog e frameG.

To the upperand lower edges of the free .QIICLD? Of the. girder lugs M and M? are attached for connecting-the girder. to the frame Qfith s crane truck A. 'Bwo. pairs. of lugs N anl 1 3 are. provided ongthetruck Aland are BgQClEOIlGiLbOVQ the other so that the lugs Mr and' iMtonthe girder. D; vcanenterthe space hettvjeenthetwo lugs N; and the two lugs N respectively. The forward. end. or. nose of each ofr'the' lugsMr and is made circular and concentric with a hole for a connecting pin Whilst the llll'lEIifiIlCliOl back of the space between the two lugs of eachpair N and N isja-lso madeconcentriowiththe pinholes in these lugs andsofthesame; radius as the nose -of-.-the g1rder lughhpr M as the case may be ascleaflyshowh' inFigure 3. The ides of respectively so that the-holes in the lugs M, V

M register automatically with those iii the lug-s N and: N and" a connecting pin} can readily be inserted. The connecting pinl is formed with two enlarged-portions P and P arrangedtofit inthe-holes in lugs M, N and N1 respectively the part of the pin connecting the twoportions P and being of: reduced diameter. This construction of 7 pin facilitates th'e insertion and withdrawal ofthe ,pin and reducesany tendeneyto binding which might occur were the pin of the same diameter throughout.

In order to prevent the pin P being shaken loose during movement of the crane and hogies a locking lever Q is provided which fits into a recess P in the pin P and in suitable lugs or supports on the upper. of the two lugsll; The end D ofrthe:relieving girder Dis supported on the frame C by a compres sion spring R to which it is connected by a rod S so tliatwhen the bogieis disconnected from thetlfng lg the weight of the girder is taken by the spring It and the ball and socket hearing l1. If desired, meanssuch, for, example, a's laterally projecting handles (not shown) may. e; provided at thee and D ti girderg l) to facilitate guiding; it; into posiw tionwhen connecting the truck; and thebogie. The. girder D becomes-operative to tran fer me of the Weight otthe qranef f m th transferred back to the. truck A byslackQHl l g thenutil the pin P can be readilywithdrawn without loss; of time.

Instead of employing a ball co ec on etween-the relieving girden and the bogie any other. form of connectionwhich willgive the bogie the desired freedom of movementmay be used. For. example, the. girdenmay terminate in a longitudinally projecting pin passing freely through a yoke mounted in bearings. transversely-of the. bogieframe, these bearings. being. provided with means for raising-and lowering them inorder to permit adjustment of the proportionofi the weight; of the cranel which. is taken by the bogies and the whole combined with .a swivelling or pivot device. p a

It will further be understood that the above arrangements have been described by way of example only and that the, detailsOfconstructi'on be variled' without departing frbml h'. scene tithe eveetio as. set orthin t eanpei dedi laims-j What me m inv nti n. ndde r t t n .enum rate r 1.1 ltret l nglcr i e t e eemb n tion o asaanetruth a relie ng-h s et r arry n part of the weight of the crane when traveling, 1 .ng girde fo a sferring weigh from the truck to the-.bogie, meansifor' connecting one end of'the girder, to the truck, and; av connection between theother end of the girder. and thebogie such that the bogie V is permitted to swivel" about a verticalaxis necting one end of the girder" to the truck, a ball joint between the other end of the girder 7 zontal plane so a's to allow the' bogie to roll 4 and to pitch. v i

I the girder and the bogie such that the bogie;

is permitted to swivel about a 'v'ertical axis I 2. In a traveling crane,the combination of a crane truck, a relieving bogie for carrying part of theweightof the crane when travel-' ing, a relieving girder for transferring weight from the truck'to the bogie, a removable pin for connecting one end of the relieving girder to the/truck, and a connection between the other end of the girder and the bogie such that the ,bogie is permitted to swivel abouta vertical axis and also to oscillate about axes I v in the horizontal plane so as" to allow the .v bogie to roll and to pitch. i

3. Ina traveling crane, the combination of a crane truck, a rel evin bogie for carry? traveling, a relieving girder. for transferring weight from the truck toth'e bogie,'n1eans for connecting one end of, the girder; to vthe truck, a'connectio'nbetweenthe'other end of i and also'to oscillate about axes in thehorizontal plane so as to allow the bogie to roll and to pitch, and means for j raising and lowering the end of the relieving girder connected to the bogie: in order to (adjust the proportion of the weight of the crane-taken ythe bogie.

4. Ina traveling crane, the combination of a crane truck, a relieving bogiefor carrying partof theweight offthe crane whentraveling, a'relieving girder for transferring weight from the truck to the bogie, means for coni a and the-bogie such that the bogie is permitted to swivelabout a vertical axis and. also to oscillate about axes in the horizontal plane was to allow the'bogie to roll and to pitch, and means for raising and lowering the-ball jointin order to adjust the proportion of the weight" of the-crane taken by the bogie;

" J 5. Ina traveling crane, the combination of a crane truck, a rellevlng bogie for carry ng part ofthe weight of the crane when travel ing, a'relieving girder for transferring weight therein,1cooperati11g lugs on one endof the girder and having corresponding pin holes therein, guides associated. with the lugs on the truck to ensure that the pin holes in the lugs automatically register when the lugs on the girder enter'into engagement with'those on the truck, aremovable pin-passing through j the holes in the cooperatinglugs, a connection'between, the other endof'the girder and 1 the bogie such that thebogie is permitted to swivel, about a vertical axis and also to oscil late about axes in the horizontal plane so as 'to allow the bogie to roll and to pitch,and'

means] for raising and loweringthe end of the relieving girder connected to the bogie in order to adjust the proportion of the weight of-the lcranetaken by the bogie.

7 In a traveling crane, the combination of: I

a crane truck, a relieving bogie for carrying part of the weight of the crane when traveling, a relieving girder for transferring weight from the truck to the bogie, lugs mounted on the end of the truck and having pinholes therein, cooperating lugs on one endof the girder and having corresponding pin holes" therein, guides associated with the lugs on the truck toensure that the pin holes in the lugs automaticallyregister when the lugs on the girder enter into engagement with those'on' the truck, a removable pin passing through socket on the other end of the girder, a vertical spindle supported 6n the bogie and about i whichthe bogie can swivel,a ball carried by the spindle which cooperates with the socket on the girder, and means associated with the spindle for raising and lowering. the ball relatively to the bogie'so as toadjust the propor the holes in the cooperating lugs, 'a 'ba1l f 1 tion'of the weightofthe crane taken by the bogle. I

V In: testimony whereof I have signed my name to this specification.

- ANTONY SCOTT STOKES.

i no,

, from'the truck tojthe bogie, means for-con i I i the proportion'of theweight of the crane o taken by the bogie.

necting one end of the girder to the'truck,

a ball socket on the other end of-the girder,-J V y a vertical spindle supported on the bogie and i 1 about which the bogie can swivel, a ball carried by the spindle which cooperates with the socket on the girder, and means associated ;with the spindle for raising and lowering the I ball relatively to the bogie soas to adjust 6. In a travelllng crane, the combination of 1 V a crane truck, a relieving bogie'for carry ng 11 part of the weightof the crane when travelfrom the truck to the bogie, lugsmounted on the end ofthe truckand having pin holes ing, a relieving girder for transferring weight 

